☰

Comcast Buisness Gateway PortForward Autoconfig

Easily/Automaticly create port forwards, without having to sit and wait for each change to apply. Created because my comcast modem randomly forgets it's port forwards, an it seems to be a common problem.

当前为 2017-03-26 提交的版本，查看 最新版本。

// ==UserScript==
// @name         Comcast Buisness Gateway PortForward Autoconfig
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Easily/Automaticly create port forwards, without having to sit and wait for each change to apply. Created because my comcast modem randomly forgets it's port forwards, an it seems to be a common problem. 
// @author       [email protected]
// @include      /https?:\/\/10\.\d{1,3}\.\d{1,3}\.\d{1,3}\/user/\index\.asp/
// @grant        none
// ==/UserScript==

var Ports = [
    ["HTTP",        80,80,80,'TCP','10.0.0.12'],
    ["HTTPS",        443,443,443,'TCP','10.0.0.12'],
    ["IKEv2-NAT-T", 4500,4500,4500,'UDP','10.0.0.12'],
    ["IPSEC-IKE",        500,500,500,'UDP','10.0.0.12'],
    ["IPSEC-ESP",        50,50,50,'ESP','10.0.0.12'],
    ["SSH",        2222,2222,22,'TCP','10.0.0.12'],
];


function dbg(txt) {
    console.log(txt);
}

function getElementByXpath(path,element=document) {
  return document.evaluate(path, element, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
}
function getElementsByXpath(xpath, parent=document)
{
  let results = [];
  let query = document.evaluate(xpath,
      parent,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
  for (let i=0, length=query.snapshotLength; i<length; ++i) {
    results.push(query.snapshotItem(i));
  }
  return results;
}
function SelectOptionByText(selectList,val) {// class = ffSelectWrapper
    dbg("Got Select List");
    dbg(selectList);
    for (var i=0;i<selectList.options.length;i++) {
        dbg("Scanning option " + selectList.options[i].value.trim() + " with id " + i + " for option " + val);
        if (selectList.options[i].textContent.trim() == val) {
            dbg("Selected option " + val + " with id " + i);
            selectList.selectedIndex=i;
            break;
        }
    }
}
function SelectOption(selectList,val) {// class = ffSelectWrapper
    dbg("Got Select List");
    dbg(selectList);
    for (var i=0;i<selectList.options.length;i++) {
        dbg("Scanning option " + selectList.options[i].value.trim() + " with id " + i + " for option " + val);
        if (selectList.options[i].value.trim() == val) {
            dbg("Selected option " + val + " with id " + i);
            selectList.selectedIndex=i;
            break;
        }
    }
}

function SetPortForwarding(name,start,stop,local_start,type,ip) {
    dbg("Setting up a port forward");
    var doc = getElementByXpath('//frame[@src="main.asp"]').contentDocument;
    var form  = getElementByXpath('//form[@name="PortForwardForm"]',doc);
    var f_name = getElementByXpath('.//input[@id="app_X_name"]',form);
    var f_start = getElementByXpath('.//input[@id="app_X_public_start"]',form);
    var f_stop = getElementByXpath('.//input[@id="app_X_public_end"]',form);
    var f_local_start = getElementByXpath('.//input[@id="app_X_private_start"]',form);
    var f_type = getElementByXpath('.//select[@id="app_X_protocol"]',form);
    var f_ip = getElementByXpath('.//input[@id="app_X_ip"]',form);
    var f_submit = getElementByXpath('.//div[@id="submit"]/input',form);
    f_name.value=name;
    f_start.value=start;
    f_stop.value=stop;
    f_local_start.value=local_start;
    // Update local stop via keyup event
    f_local_start.onkeyup();
    SelectOptionByText(f_type,type);
    f_ip.value=ip;
    setTimeout(function() { f_submit.click(); },500);
}

function AddNewForward() {
    var doc = getElementByXpath('//frame[@src="main.asp"]').contentDocument;
    var form  = getElementByXpath('//form[@name="ServiceA"]',doc);
    var add_new = getElementByXpath('.//input[@name="add_new"]',form);
    add_new.click();
}

function CheckLoop(xpath,callback,thenCall=function(){return null;},tries=1000,errcallback=function(e_xpath) { dbg("Failed to find form '" + e_xpath + "' within tries limit."); }) {
    var doc = getElementByXpath('//frame[@src="main.asp"]').contentDocument;
    var elm = getElementByXpath(xpath,doc);
    if ( elm ) {
        callback();
        thenCall();
    }
    else if (tries !== 0) {
        dbg("Didn't see element");
        dbg(tries);
        setTimeout(function() { CheckLoop(xpath,callback,thenCall,tries - 1); }, 500);
    }
    else {
        errcallback(xpath);
    }
}



// Intercept Alerts
var oldAlert=window.alert;
window.alert = function() {
    dbg("got Alert!");
    oldAlert.apply(window,arguments);
};

function rollmsg(elm,msg) {
    var NowMsg=elm.textContent;
    NowMsg=NowMsg.substring(1,NowMsg.length)+NowMsg.substring(0,1);
    elm.textContent = NowMsg;
    if (elm.offsetParent !== null) {
        setTimeout(function(){ rollmsg(elm,msg); },200);
    }
}
var port_i = 0;

function itteratePorts() {
    if (port_i < Ports.length) {
        var port = Ports[port_i];
        port_i++;
        var forwardPort = function() {
            SetPortForwarding.apply(null,port);
            var doc = getElementByXpath('//frame[@src="main.asp"]').contentDocument;
            var title  = getElementByXpath('//div[@id="body-container"]/h2',doc);
            title.textContent="SAVING ! ! !";
            // I am not sure why this makes the title 3 lines long, but I like it!
            title.style.width*=2;
            rollmsg(title,"");
        };
        var addNewForward = function() {
            var doc = getElementByXpath('//frame[@src="main.asp"]').contentDocument;
            var form  = getElementByXpath('//form[@name="ServiceA"]',doc);
            var add_new_btn = getElementByXpath('.//input[@name="add_new"]',form);
            var edit_btn = getElementByXpath('.//input[@name="edit"]',form);
            var rows = getElementsByXpath('.//tr[td/@class="content"]',form);
            var edit = false;
            dbg("Configuring Forward Named " + port[0]);
            for (var r=0; r<rows.length; r++) {
                var row=rows[r];
                if (row.children[2].textContent === port[0] ) {
                    dbg("Found Existing Forward! Editing #" + r);
                    edit = true;
                    row.children[0].children[0].click();
                }
            }
            if (edit) {
                edit_btn.click();
            }
            else {
                dbg("Creating new Forward!");
                add_new_btn.click();
            }
        };
        //CheckLoop('//form[@name="ServiceA"]',addNewForward);
        //if (true) return null;
        CheckLoop('//form[@name="ServiceA"]',addNewForward,function() {
            CheckLoop('//form[@name="PortForwardForm"]',forwardPort,itteratePorts);
        });
    }
}
itteratePorts();